Power taking device and circuit breaker

Abstract

The utility model relates to the field of low-voltage electric appliances, in particular to a power taking device and a circuit breaker comprising the power taking device. The power taking device comprises a contact system of the circuit breaker and a second power taking mechanism, the contact system comprises a moving contact mechanism and a static contact, and the moving contact mechanism comprises a moving contact, a support and a contact spring; the second electricity taking mechanism comprises a fixedly arranged bearing part and an electricity taking device mounted on the bearing part, and the electricity taking device comprises a second electricity taking arm and is also used for being electrically connected with a control circuit board of the circuit breaker; in the closing process of the moving contact mechanism and the static contact, the contact spring is in contact conduction with the second power taking arm; when the moving contact mechanism and the static contact are in a disconnected state, the contact spring and the second power taking arm are separated and disconnected. The power taking device can be switched off to power off the control circuit board after the circuit breaker is switched off, the safety is good, and the structure is simple; the circuit breaker is good in safety.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of low voltage apparatus, concretely relates to a power taking device and a circuit breaker comprising the power taking device. BACKGROUND

[0002] The existing electronic residual current operating circuit breaker cannot be connected reversely at the incoming line end and outgoing line end and the power supply side wire and load side wire, that is, the incoming line end is connected with the load side wire and the outgoing line end is connected with the power supply side wire, because:

[0003] 1. The electronic residual current operating circuit breaker will be actuated due to the leakage fault, the line board will be continuously powered, the silicon controlled rectifier cannot pass the zero point (or lower than the maintaining voltage), the control line board continuously supplies power to the coil of the leakage release, the coil is burned out, and the outgoing line end is induced voltage, so the safety is poor.

[0004] 2. The dielectric test cannot be conducted on the electronic component board end, because the high voltage will damage the electronic components on the control line board, and there is a safety hazard. INVENTION CONTENTS

[0005] The utility model aims at overcoming at least one defect of the prior art, providing a power taking device, which can disconnect the power supply for the control line board after the circuit breaker is tripped, is safe and simple in structure, and providing a circuit breaker comprising the power taking device, which is safe.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A power taking device comprises a contact system of a circuit breaker and a second power taking mechanism matched with the contact system one by one, the contact system comprises a moving contact mechanism and a static contact, the moving contact mechanism comprises a support rotatably arranged and a moving contact and a contact spring respectively matched with the support and the moving contact and mounted on the support, and the moving contact is electrically connected with the contact spring;

[0008] The second power taking mechanism comprises a bearing member fixedly arranged and a power taking device mounted on the bearing member, the power taking device comprises a second power taking arm, and the power taking device is further used for electrically connecting with a control line board of the circuit breaker; during the closing process of the moving contact mechanism and the static contact, the contact spring is in contact with the second power taking arm and is conducted; in the disconnected state of the moving contact mechanism and the static contact, the contact spring is separated from the second power taking arm and is disconnected.

[0009] Further, the power taking device comprises a second power taking member and a columnar conductive rod, the carrier is fixedly arranged and comprises a carrier mounting slot, and each of the pair of side walls of the carrier mounting slot is provided with a carrier clamping slot; the second power taking member comprises a second power taking arm and a second mounting plate which are connected by bending; in the process of closing of the movable contact mechanism and the static contact, the contact spring is in contact with the second power taking arm; in the process of opening of the movable contact mechanism and the static contact, the contact spring is separated from the second power taking arm; the conductive rod comprises a contact rod arranged at one end thereof and the other end of the conductive rod is used for extending to the position of the control circuit board of the circuit breaker and electrically connected with the control circuit board, the contact rod is arranged in the carrier mounting slot, the second mounting plate is inserted into the carrier mounting slot along a second direction d2 and the pair of side edges of the second mounting plate are respectively inserted into the two carrier clamping slots, and the second mounting plate and the bottom wall of the carrier mounting slot are in clamping contact with the contact rod and electrically connected with the contact rod.

[0010] Further, the rotation axis direction of the movable contact mechanism is a first direction d1, the carrier and the movable contact mechanism are arranged side by side along the first direction d1, and the first direction d1 is perpendicular to the second direction d2.

[0011] Further, the second mounting plate is arranged in a plane which is perpendicular to the first direction d1 and the second mounting plate extends along the second direction d2, and the second power taking arm extends along the first direction d1.

[0012] Further, the conductive rod (9-2) is further limited in position with the carrier and the second power taking member respectively, and movement of the conductive rod relative to the carrier and the second power taking member is prevented.

[0013] Further, the carrier further comprises a carrier positioning slot arranged on the bottom wall of the carrier mounting slot, the contact rod is arranged in the carrier positioning slot, the contact rod is matched with the cross-sectional shape of the carrier positioning slot in shape, and the second mounting plate is limited in position with the contact rod, so that the contact rod is kept in the carrier positioning slot.

[0014] Further, the second mounting plate comprises a second mounting plate opening arranged in the middle of the second mounting plate and a second contact finger arranged in the second mounting plate opening, the second contact finger extends along the axial direction of the contact rod and one end of the second contact finger is connected with the side edge of the second mounting plate opening, and the other end of the second contact finger is inclined towards the contact rod and presses the contact rod.

[0015] Further, the second power taking component further comprises a power taking component limiting plate, one end of the power taking component limiting plate is connected with the second mounting plate by bending, and the carrier is used for limiting the other end of the power taking component limiting plate between the carrier and the shell of the circuit breaker by cooperating with the shell of the circuit breaker; the conductive rod further comprises an upper connecting rod and an upper extending rod, one end of the upper connecting rod is connected with one end of the contact rod by bending, and the other end of the upper connecting rod is connected with one end of the upper extending rod by bending, and the other end of the upper extending rod is used for electrically connecting with the control circuit board, the upper connecting rod and the contact rod are coplanar, and the upper extending rod is located on one side of the plane; the carrier further comprises a carrier horizontal limiting groove and a carrier vertical limiting groove, one end of the carrier horizontal limiting groove is connected with one end of the carrier positioning groove by bending, and the other end of the carrier horizontal limiting groove is connected with one end of the carrier vertical limiting groove by bending; the upper connecting rod is arranged in the carrier horizontal limiting groove, the upper extending rod is arranged in the carrier vertical limiting groove, and the power taking component limiting plate is opposite to at least one segment of the carrier vertical limiting groove to limit the upper extending rod in the carrier vertical limiting groove; the carrier is further used for limiting the power taking component limiting plate between the carrier and the shell of the circuit breaker by cooperating with the shell of the circuit breaker.

[0016] Further, the upper connecting rod extends along a first direction d1, the upper extending rod extends along a third direction d3, and the first direction d1, the second direction d2 and the third direction d3 are perpendicular to each other.

[0017] Further, the power taking component limiting plate comprises a second connecting plate and a second limiting plate, one end of the second connecting plate is connected with the second mounting plate by bending, and the other end of the second connecting plate is connected with one end of the second limiting plate, the second connecting plate extends along the first direction d1, the second limiting plate extends along the third direction d3, the second connecting plate and the second limiting plate are coplanar and both are perpendicular to the second direction d2, and the carrier is used for limiting at least part of the second limiting plate between the carrier and the shell of the circuit breaker by cooperating with the shell of the circuit breaker, so as to prevent the second power taking component from moving along the second direction d2.

[0018] Further, the contact spring is in a V-shaped structure and comprises a spring contact arm and a spring cooperating arm connected by bending; the support comprises a support mounting cavity arranged therein, a support passing hole for the movable contact to pass through is arranged on a bottom wall of the support mounting cavity, and a support table is arranged on one side of the support passing hole; the movable contact comprises a movable contact plate, one end of the movable contact plate is a movable contact cooperating end, and the other end of the movable contact plate is provided with a movable contact point; the contact spring is arranged in the support mounting cavity, the movable contact cooperating end passes through the support passing hole and extends into the support mounting cavity, the spring cooperating arm is in abutting and pressing cooperation with the movable contact cooperating end, the spring contact arm is in abutting and pressing cooperation with the side wall of the support mounting cavity and the free end of the spring contact arm protrudes out of the support mounting cavity, and the bending connection part of the spring contact arm and the spring cooperating arm abuts on the support table; the second power taking arm is located between the spring contact arm and the spring cooperating arm and cooperates with the spring contact arm of the contact spring of the second contact system.

[0019] Further, the movable contact further comprises a movable contact limiting platform arranged on the movable contact matching end and protruding to the side where the contact spring is located, the connecting part of the movable contact limiting platform and the movable contact plate forms a limiting step, and the limiting step faces the bottom wall of the supporting installation cavity; the spring matching arm is a plate structure and comprises a matching arm contact finger and a matching arm limiting finger arranged side by side on the free end of the spring matching arm, the free end of the matching arm limiting finger abuts against the limiting step, and the matching arm contact finger abuts against the movable contact limiting platform.

[0020] Further, the spring matching arm and the second power taking arm are both plate structures, the planes where the spring matching arm and the second power taking arm are located are oppositely arranged, and the second power taking member further comprises a second power taking contact arranged on the second power taking arm and used for contact conduction with the spring matching arm.

[0021] The power taking device of the utility model, the power taking device of the second power taking mechanism is installed on the bearing part, the overall installation and dismounting of the second power taking mechanism is convenient, and the operation efficiency is improved; the second power taking arm and the contact spring are matched between the contact system and the control circuit board to form a breakpoint, no matter how the circuit breaker is wired, the movable contact mechanism and the fixed contact are in the disconnected state, the breakpoint is also in the disconnected state, the control circuit board and the contact system are both in the disconnected state, therefore, the dielectric property test can be carried out on the electronic component board end, the components on the control circuit board are not damaged, and the safety performance of the circuit breaker is improved.

[0022] In addition, the bearing part integrates the second power taking member and the conductive rod together, the installation and layout of the second power taking mechanism are convenient, the bottom wall of the second installation plate and the bearing part installation slot clamps and contacts the contact rod and is electrically connected with the contact rod, the installation of the bearing part, the second power taking member and the conductive rod is realized, the electrical connection of the second power taking member and the conductive rod is realized, the assembly is simple, the columnar conductive rod has better current carrying capacity and is convenient for shaping, the shape can be well maintained, and the columnar conductive rod requires smaller space under the condition that the current carrying requirement is certain.

[0023] A circuit breaker comprising the power taking device; the circuit breaker further comprises a contact system, the contact system comprises two groups or two groups or more contact systems arranged side by side in a first direction d1 in turn, the movable contact mechanisms of the contact systems are synchronously rotationally arranged, and the rotation shaft directions of the movable contact mechanisms are the first direction d1; the contact system matched with the second power taking mechanism is a phase pole contact system and is called a second contact system; the bearing part of each power taking device is arranged between adjacent movable contact mechanisms.

[0024] Further, the circuit breaker further comprises a shell, the shell comprises an upper cover and a base which are relatively split together along a third direction d3;

[0025] The supports are connected through a support connecting shaft in transmission;

[0026] The carrier further comprises a carrier socket arranged at one end of the carrier, and a carrier first leg and a carrier second leg respectively arranged at two sides of the carrier socket, the carrier is arranged on the corresponding support connecting shaft through the carrier socket, the carrier first leg and the carrier second leg are respectively arranged at two sides of the support connecting shaft in the third direction d3 and abut against the base respectively; the upper cover and the base are respectively limited with the carrier to fix the carrier in the working position.

[0027] Further, the support and the support connecting shaft are integrated.

[0028] Further, the base comprises a partition wall arranged in the base, the partition wall is provided with a support shaft slot corresponding to the support connecting shaft, the partition wall is arranged between adjacent contact systems, the carrier first leg and the carrier second leg of the carrier abut against the corresponding partition wall in the third direction d3, and the partition wall matched with the carrier is a support partition wall.

[0029] Further, the support partition wall comprises a front support part matched with the carrier first leg and a rear support part matched with the carrier second leg.

[0030] The front support part comprises a first sub-part and a second sub-part arranged relatively and spaced apart in the first direction d1, a base clamping slot is formed between the first sub-part and the second sub-part, and the second sub-part is provided with a right-angle groove extending in the third direction d3; the carrier first leg comprises a first sub-side wall and a second sub-side wall arranged relatively and spaced apart in the first direction d1, a carrier vertical limiting slot for accommodating the upper extension rod of the conductive rod is formed between the first sub-side wall and the second sub-side wall, the second sub-side wall comprises an axial limiting table and a radial limiting table arranged at the free end of the second sub-side wall, the axial limiting table is arranged in the base clamping slot and is limited with the first sub-part and the second sub-part respectively, the radial limiting table abuts against the end of the first sub-part in the third direction d3, the first sub-side wall is inserted in the right-angle groove, and the second limiting plate of the second power taking element is limited between the side of the right-angle groove and the second sub-part in the second direction d2 and is arranged side by side with the side of the right-angle groove in the second direction d2.

[0031] The rear support part comprises a base limiting wall, a base blocking wall and a base positioning slot, the two base limiting walls are arranged relatively and spaced apart along the rotation axis of the moving contact mechanism, the base blocking wall and the base positioning slot are arranged side by side in the second direction d2, and the base positioning slot is arranged away from the front support part in the second direction d2 relative to the base blocking wall; the carrier second leg comprises a leg stem and a limiting foot, the limiting foot is connected with one end of the leg stem by being bent; the leg stem is arranged between the two base limiting walls along the rotation axis of the moving contact mechanism, the leg stem is limited with the base blocking wall in the second direction d2 and is arranged on two sides of the base blocking wall respectively with the front support part, and the limiting foot is inserted into the base positioning slot in the third direction d3.

[0032] The upper cover comprises an upper cover pressing rib and an upper cover positioning rib, the upper cover pressing rib abuts against the end of the bearing away from the base, and the upper cover positioning rib is matched with the base blocking wall in the second direction d2 to limit the leg trunk between the upper cover positioning rib and the base blocking wall, and the upper cover positioning rib abuts against the limiting foot in the third direction d3.

[0033] Further, the circuit breaker further comprises a test button and a first power taking mechanism matched with the contact system one by one, the contact system matched with the first power taking mechanism is the phase pole contact system and is referred to as the first contact system; the first power taking mechanism comprises a test arm and a power taking arm; the test button is in transmission cooperation with the test arm and is used for testing the leakage protection function of the circuit breaker; in the process of closing the movable contact mechanism and the static contact of the first contact system, the contact spring is in contact with the power taking arm to be conducted; in the open state of the movable contact mechanism and the static contact of the first contact system, the power taking arm is separated from the contact spring to be disconnected; the first power taking mechanism is further used for being electrically connected with the control circuit board to provide working power supply for the control circuit board.

[0034] Further, the circuit breaker further comprises an operating mechanism, the operating mechanism is in transmission cooperation with each movable contact mechanism to drive each movable contact mechanism to rotate; the first power taking mechanism is fixedly arranged on the support of the operating mechanism; the first contact system and the second contact system are arranged side by side along the first direction d1 with the support.

[0035] Further, the first contact system and the second contact system are located on the same side of the support in the first direction d1, and the first contact system is arranged close to the support relative to the second contact system.

[0036] Further, the circuit breaker comprises four groups of contact systems, two groups of second power taking mechanisms and one group of first power taking mechanisms, the four groups of contact systems are A-phase contact system, B-phase contact system, C-phase contact system and N-phase contact system arranged in sequence along the first direction d1, the operating mechanism is arranged on the N-phase contact system, the A-phase contact system, the B-phase contact system and the C-phase contact system are phase pole contact systems, one group of second power taking mechanisms is arranged between the movable contact mechanisms of the A-phase contact system and the B-phase contact system and is matched with the movable contact mechanism of the A-phase contact system, the other group of second power taking mechanisms is arranged between the movable contact mechanisms of the B-phase contact system and the C-phase contact system and is matched with the movable contact mechanism of the B-phase contact system, and the first power taking mechanism is matched with the movable contact mechanism of the C-phase contact system.

[0037] The circuit breaker of the utility model has good safety.

[0038] In addition, each phase of the circuit breaker of the utility model supplies power to the control circuit board, and the stability of the working power supply of the control circuit board is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a structure schematic view of the circuit breaker of the utility model, shows the upper cover and the base of the shell;

[0040] Figure 2 is the explosion view of the circuit breaker of the utility model, shows the cooperation relationship of the power supply switch mechanism and the movable contact device;

[0041] Figure 3 is a structure schematic view of the circuit breaker of the utility model, shows the cooperation relationship of the power supply switch mechanism and the movable contact device and the cooperation relationship of the bearing piece of the second power taking mechanism and the front support part of the base;

[0042] Figure 4 is the enlarged structure schematic view of I part of the utility model Figure 3 ;

[0043] Figure 5 is a structure schematic view of the circuit breaker of the utility model, shows the cooperation relationship of the bearing piece of the second power taking mechanism and the rear support part of the base;

[0044] Figure 6 is the enlarged structure schematic view of II part of the utility model Figure 5 ;

[0045] Figure 7 is a structure schematic view of the circuit breaker of the utility model, shows the cooperation relationship of the upper cover and the bearing piece of the second power taking mechanism;

[0046] Figure 8 is the assembly structure schematic view of the operating mechanism, the power supply switch mechanism and the first power taking mechanism of the first embodiment of the utility model under one visual angle;

[0047] Figure 9 is a structure schematic view of the power supply switch mechanism of the utility model;

[0048] Figure 10 is the assembly structure schematic view of the operating mechanism, the power supply switch mechanism and the first power taking mechanism of the first embodiment of the utility model under another visual angle;

[0049] Figure 11 is a structure schematic view of the operating mechanism under one visual angle;

[0050] Figure 12 is a structure schematic view of the operating mechanism under another visual angle;

[0051] Figure 13 is a structure schematic view of the first conducting piece of the first power taking mechanism of the first embodiment of the utility model;

[0052] Figure 14Is the structure schematic view of the second power taking mechanism of the utility model;

[0053] Figure 15 Is the explosion view of the second power taking mechanism of the utility model;

[0054] Figure 16 Is the structure schematic view of the bearing of the second power taking mechanism of the utility model in two visual angles;

[0055] Figure 17 Is the structure schematic view of the conductive rod of the second power taking mechanism of the utility model;

[0056] Figure 18 Is the structure schematic view of the base of the utility model;

[0057] Figure 19 Is the enlarged structure schematic view of III part of the utility model Figure 18 ;

[0058] Figure 20 Is the structure schematic view of the upper cover of the utility model;

[0059] Figure 21 Is the structure schematic view of the circuit breaker of the utility model removing the shell;

[0060] Figure 22 Is the explosion view of the circuit breaker of the utility model, shows the first power taking mechanism of the second embodiment;

[0061] Figure 23 Is the sectional view of the circuit breaker of the utility model removing the shell;

[0062] Figure 24 Is the enlarged structure schematic view of IV part of the utility model Figure 23 ;

[0063] Figure 25 Is the assembly structure schematic view of the operating mechanism and the first power taking mechanism of the second embodiment in one visual angle of the utility model;

[0064] Figure 26 The assembly structure schematic view of the operating mechanism and the first power taking mechanism of the second embodiment in another visual angle of the utility model;

[0065] Figure 27 Is the structure schematic view of the first power taking mechanism of the second embodiment of the utility model.

[0066] Explanation of reference signs

[0067] Shell 1;

[0068] Upper cover 1-0, upper cover pressing rib 1-00, upper cover positioning rib 1-01;

[0069] Base 1-1, partition wall 1-1s, front support part 1-10, first sub part 1-100, second sub part 1-101, base clamping groove 1-102, right-angle groove 1-1010, rear support part 1-13, base limiting wall 1-130, base blocking wall 1-131, base positioning groove 1-132, contact cavity 1-14, support shaft groove 1-15;

[0070] Operating mechanism 2;

[0071] Support 2-0, support body 2-00, support first side plate 2-001, transverse part 2-002, support mounting table 2-0020, test arm limiting part 2-0021, power taking arm limiting part 2-0022, power taking mainboard slot 2-0023, test arm blocking rib 2-0024, support second side plate 2-01, side plate contact part 2-010, side plate connecting part 2-011, clamping plate 2-02, first support slot 2-020, support bearing part 2-03, bearing part mounting groove 2-030, second support slot 2-031;

[0072] Contact system 34, contactor system c;

[0073] Moving contact device 3g, rotating shaft 3s, support connecting shaft 3c, triggering part 3a, moving contact mechanism 3, support 3-0, support mounting cavity 3-00, support passing hole 3-01, support table 3-02, moving contact 3-1, moving contact plate 3-1m, moving contact limiting table 3-10, limiting table step 3-11, contact spring 3-2, spring contact arm 3-20, spring matching arm 3-21, matching arm contact finger 3-210, matching arm limiting finger 3-211;

[0074] Static contact 4;

[0075] Power supply switch mechanism 5;

[0076] Power supply moving contact 5-0, power supply contact 5-00, power supply moving contact arm 5-01, power supply mounting plate 5-02, power supply connecting plate 5-03, power supply wiring plate 5-04;

[0077] Power supply static contact 5-1, power supply static contact plate 5-10, power supply static wiring plate 5-11;

[0078] Test button 6;

[0079] Ground fault release t, control circuit board p;

[0080] First power taking mechanism 7;

[0081] First power taking member 7-0, helix 7-00;First conductive member 7-1, first contact plate 7-10, first connecting part 7-11, connecting part first plate 7-110, connecting part second plate 7-111, connecting part third plate 7-112, connecting part fourth plate 7-113, connecting part fifth plate 7-114, connecting part sixth plate 7-115, connecting part seventh plate 7-116;Test arm 7-2, test arm horizontal part 7-20, test arm vertical part 7-21;Power taking arm 7-3, power taking arm main plate 7-30, power taking arm limiting finger 7-31;Power taking connecting arm 7-4, connecting arm first plate 7-40, connecting arm second plate 7-41, connecting arm third plate 7-42, connecting arm fourth plate 7-43, connecting arm fifth plate 7-44, connecting arm sixth plate 7-45, power taking main plate 7-5, power taking mechanism contact 7-6;

[0082] Residual current transformer 8;

[0083] Second power taking mechanism 9;

[0084] Bearing member 9-0, bearing member mounting slot 9-00, bearing member clamping slot 9-01, bearing member horizontal limiting slot 9-02, bearing member first leg 9-034, first sub side wall 9-03, second sub side wall 9-04, axial limiting table 9-040, radial limiting table 9-041, bearing member second leg 9-056, leg stem 9-05, limiting foot 9-06, bearing member clamping port 9-07, bearing member limiting surface 9-08, bearing member positioning slot 9-09, bearing member vertical limiting slot 9-010;

[0085] Power taking device 9d;

[0086] Second power taking member 9-1, second power taking contact 9-10, second power taking arm 9-11, second mounting plate 9-12, second mounting plate opening 9-120, second contact finger 9-121, power taking member limiting plate 9-134, second connecting plate 9-13, second limiting plate 9-14;Conductive rod 9-2, contact rod 9-20, upper connecting rod 9-21, upper extension rod 9-22, lower connecting rod 9-23, lower extension rod 9-24. DETAILED DESCRIPTION

[0087] The following examples, combined with the drawings, further illustrate the specific embodiments of the circuit breaker of the utility model. The circuit breaker of the utility model is not limited to the description of the following examples.

[0088] As Figures 2-3, 5, 21-23, the utility model discloses a circuit breaker, it includes the casing 1 and the operating mechanism 2, contact system 34 that are all arranged in casing 1, the contact system 34 includes moving contact device 3g and at least one group static contact 4, moving contact device 3g includes rotationally arranged pivot 3s and at least one group with static contact 4 one-to-one cooperation's moving contact 3-1, that is, contact system 34 includes at least one group contact system c, and contact system c includes the moving contact mechanism 3 and static contact 4 of cooperation, and moving contact mechanism 3 includes rotationally arranged support 3-0 and installs on support 3-0 moving contact 3-1, pivot 3s includes support 3-0 (that is, support 3-0 is the component part of pivot 3s), and the rotation axis direction of pivot 3s (also the rotation axis direction of moving contact device 3g and moving contact mechanism 3) is first direction d1, and operating mechanism 2 is connected with moving contact device 3g transmission, and moving contact device 3g is driven with static contact 4 and is closed and disconnected by operating mechanism 2.Further, the utility model discloses a circuit breaker further includes the electric leakage release system arranged in casing 1, and the electric leakage release system includes with operating mechanism 2 transmission cooperation for driving operating mechanism 2 release's electric leakage release ware t, when the electric leakage of the circuit where the circuit breaker is located occurs (that is, the appearance of residual current), and electric leakage release ware t actuation and drive operating mechanism 2 release, and operating mechanism 2 drives moving contact device 3g and static contact 4 disconnect (that is, each moving contact mechanism 3 and corresponding static contact 4 disconnect).Further, the utility model discloses a circuit breaker further includes the control circuit board p arranged in casing 1, and the electric leakage release system further includes the residual current sensor 8 arranged in casing 1, and the residual current sensor 8 includes residual current induction coil, and when the electric leakage failure of control circuit board p is detected by residual current sensor 8, control electric leakage release ware t actuation and drive operating mechanism 2 release.

[0089] Further, the utility model discloses a circuit breaker, and moving contact device 3g includes two groups or two groups above's moving contact 3-1, and each moving contact 3-1 is sequentially and side by side arranged on pivot 3s along the axial direction (that is, first direction d1) of pivot 3s, and moving contact device 3g is driven by operating mechanism 2 and rotates, and each moving contact 3-1 is driven and is closed and disconnected with corresponding static contact 4 synchronously, that is, the contact system 34 includes two groups or two groups above's contact system c, and each contact system c includes the moving contact mechanism 3 and static contact 4 of cooperation, and pivot 3s includes the support 3-0 of each moving contact mechanism 3, and each support 3-0 is coaxial and rotates synchronously, for example, adjacent support 3-0 is transmissionally connected with each other through support connecting shaft 3c, and support 3-0 and support connecting shaft 3c are integral structure or split structure, and in the embodiment, support 3-0 and support connecting shaft 3c are preferably integral structure, that is, pivot 3s is integral structure.

[0090] Specifically, the circuit breaker is a four-phase circuit breaker, which comprises A-phase, B-phase, C-phase and N-phase arranged side by side in sequence along a first direction d1, and the A-phase, the B-phase, the C-phase and the N-phase all comprise a contact system c, that is, the contact system 34 comprises four groups of contact systems c, the four groups of contact systems c are arranged side by side and spaced apart in sequence along the first direction d1 and are respectively an A-phase contact system, a B-phase contact system, a C-phase contact system and an N-phase contact system, wherein the A-phase contact system, the B-phase contact system and the C-phase contact system are all phase pole contact systems. Further, the operating mechanism 2 is arranged on the N-phase contact system, which also means that the A-phase contact system, the B-phase contact system, the C-phase contact system and the operating mechanism 2 are arranged side by side in sequence along the first direction d1.

[0091] As other embodiments of the circuit breaker of the utility model, the circuit breaker of the utility model does not arrange the N-phase contact system, but only arranges the A-phase contact system, the B-phase contact system and the C-phase contact system, and the N-phase of the circuit breaker is arranged as a through circuit, that is, no breakpoint (that is, contact system) is arranged in the N-phase, that is, the circuit breaker of the utility model is a three-phase four-wire circuit breaker.

[0092] As other embodiments of the circuit breaker of the utility model, the circuit breaker of the utility model is a three-phase circuit breaker, which only has the A-phase, the B-phase and the C-phase, and the A-phase, the B-phase and the C-phase all comprise a contact system c, and the operating mechanism 2 and each phase contact system c are arranged side by side along the first direction d1 or are arranged on the contact system c of one phase.

[0093] As other embodiments of the circuit breaker of the utility model, the circuit breaker of the utility model is a two-phase circuit breaker, one phase is a phase pole and comprises a phase pole contact system, and the other phase is an N-phase, and the N-phase comprises an N-phase contact system or is arranged as a through circuit.

[0094] Further, as shown in Figure 1 Further, the shell 1 comprises an upper cover 1-0 and a base 1-1 relatively combined together along a third direction d3, and the operating mechanism 2, the contact system 34, the leakage tripping system and the control circuit board p are all arranged in a space surrounded by the upper cover 1-0 and the base 1-1.

[0095] Further, the operating mechanism 2 is realized by the prior art, which comprises a bracket 2-0 and a jump buckle, a lock buckle and a connecting rod and the like arranged on the bracket 2-0. Further, as shown in Figure 8 、 10 -12, the bracket 2-0 comprises a bracket first side plate 2-001 and a bracket second side plate 2-01 arranged relatively and spaced apart along the first direction d1. Further, the jump buckle, the lock buckle and the connecting rod and the like are all arranged between the bracket first side plate 2-001 and the bracket second side plate 2-01.

[0096] Specifically, the bracket 2-0 includes a bracket main body 2-00 and a bracket second side plate 2-01 oppositely arranged along a first direction d1, the bracket main body 2-00 includes a bracket first side plate 2-001 and a transverse part 2-002 connected by bending, one end of the transverse part 2-002 is connected with the bracket first side plate 2-001 by bending and the other end is fixedly connected with the bracket second side plate 2-01. Further, the bracket main body 2-00 is an insulating structure, that is, the bracket main body 2-00 is made of insulating material.

[0097] As other embodiments of the bracket 2-0, the bracket main body 2-00 only includes the bracket first side plate 2-001 and does not include the transverse part 2-002, and the bracket first side plate 2-001 is fixedly connected with the bracket second side plate 2-01 through a connecting shaft.

[0098] As shown in Figures 2-5 , it is a layout mode of the circuit breaker of the utility model:

[0099] The ground fault release t and the bracket 2-0 are arranged side by side along the first direction d1 and located at one side of the bracket first side plate 2-001, and the bracket second side plate 2-01 is located at the other side of the bracket first side plate 2-001; the ground fault release t and the contact system 34 are arranged side by side along the second direction d2; in the third direction d3, the control circuit board p is located at one side of the residual current transformer 8, and the ground fault release t and the operating mechanism 2 are located at the other side of the residual current transformer 8; the first direction d1, the second direction d2 and the third direction d3 are perpendicular to each other. The axial direction of the residual current sensing coil of the residual current transformer 8 is preferably the same as the third direction d3.

[0100] As shown in Figures 23-24 , an improvement point of the circuit breaker of the utility model is the structure of the movable contact mechanism 3 - specifically the structure of the contact spring 3-2, the specific structure of the movable contact 3-1 and the assembly relationship of the support 3-0, the movable contact 3-1 and the contact spring 3-2:

[0101] The contact spring 3-2 is V-shaped structure and comprises a spring contact arm 3-20 and a spring matching arm 3-21 connected by bending; the support 3-0 comprises a support mounting cavity 3-00 arranged therein, a support passing hole 3-01 for the movable contact 3-1 to pass through is arranged on the bottom wall of the support mounting cavity 3-00, and a support platform 3-02 is arranged on one side of the support passing hole 3-01; the movable contact 3-1 comprises a movable contact plate 3-1m, one end of the movable contact plate 3-1m is a movable contact matching end, and the other end is provided with a movable contact point; the contact spring 3-2 is arranged in the support mounting cavity 3-00, the movable contact matching end passes through the support passing hole 3-01 and extends into the support mounting cavity 3-00, the spring matching arm 3-21 is in abutting and matching with the movable contact matching end, the spring contact arm 3-20 is in abutting and matching with the side wall of the support mounting cavity 3-00 (specifically, the side wall of the support mounting cavity 3-00 opposite to the movable contact plate 3-1m), and the bending connection part of the spring contact arm 3-20 and the spring matching arm 3-21 abuts against the support platform 3-02. Further, the movable contact 3-1 further comprises a movable contact limiting platform 3-10 arranged on the movable contact matching end and protruding to the side where the contact spring 3-2 is located, a limiting step 3-11 is formed at the connection part of the movable contact limiting platform 3-10 and the movable contact plate 3-1m, and the limiting step 3-11 faces the bottom wall of the support mounting cavity 3-00; the spring matching arm 3-21 is plate-shaped structure and comprises a matching arm contact finger 3-210 and a matching arm limiting finger 3-211 arranged side by side on the free end thereof, the free end of the matching arm contact finger 3-210 abuts against the limiting step 3-11, and the matching arm contact finger 3-210 abuts against the movable contact limiting platform 3-10. The planes where the spring contact arm 3-20 and the spring matching arm 3-21 are located are parallel to the first direction d1.

[0102] The movable contact mechanism 3 has simple structure and is easy to install, the limiting step 3-11 of the movable contact and the matching arm limiting finger 3-211 of the contact spring 3-2 are matched, the contact spring 3-2 is reliably kept in the support mounting cavity 3-00, and the contact spring 3-2, the movable contact 3-1 and the support 3-0 are stably and reliably assembled together.

[0103] Further, the free end of the spring contact arm 3-20 extends out of the support mounting cavity 3-00 and is used for matching with the first power taking mechanism 7 and / or the second power taking mechanism 9 of the circuit breaker, which will be described in detail below.

[0104] It should be noted that the contact spring 3-2 is not limited to the above implementation manner, and the contact spring 3-2 can also be a torsion spring, specifically: the contact spring 3-2 is a double torsion spring, one group of spring arms of the contact spring 3-2 is matched with the movable contact plate 3-1m, and the other group of spring arms is matched with the side wall of the support mounting cavity 3-00 and is used for matching with the first power taking mechanism 7 and / or the second power taking mechanism 9 of the circuit breaker.

[0105] AsFigures 2-3 , 8-11, another improvement of the circuit breaker lies in that: it comprises a power supply switch mechanism 5 connected in series in the power supply circuit of the leakage tripping device t, the power supply switch mechanism 5 comprises a power supply movable contact 5-0 and a power supply static contact 5-1 used in cooperation, the power supply movable contact 5-0 is in transmission cooperation with the rotating shaft 3s of the movable contact device 3g; the movable contact device 3g and the static contact 4 are in the open state, the power supply movable contact 5-0 and the power supply static contact 5-1 remain in the open state; the rotating shaft 3s drives the power supply movable contact 5-0 to act and close with the power supply static contact 5-1 in the process of closing the movable contact device 3g and the static contact 4.

[0106] The "process of closing the movable contact device 3g and the static contact 4" refers to the whole process from the start of the movable contact device 3g to the contact and conduction of the static contact 4, that is, the power supply movable contact 5-0 can be closed with the power supply static contact 5-1 at any time before the contact and conduction of the movable contact device 3g and the static contact 4, and can also be closed with the power supply static contact 5-1 at the time of contact and conduction of the movable contact device 3g and the static contact 4

[0107] The power supply switch mechanism 5 brings the following benefits: it forms a breakpoint in the power supply circuit of the leakage tripping device t, when the circuit breaker is in the circuit and the leakage fault occurs, the power supply switch mechanism 5 is also opened, thereby avoiding the situation that the tripping coil of the leakage tripping device t is burned out due to long-time power supply after the circuit breaker is opened, ensuring the reliable and stable work of the leakage tripping device t and prolonging the service life of the leakage tripping device t.

[0108] Further, the rotating shaft 3g and the power supply movable contact 5-0 of the power supply switch mechanism 5 are directly in transmission cooperation, the transmission path is short and reliable, and the power supply switch mechanism 5 can stably and reliably close and open the power supply circuit of the leakage tripping device t.

[0109] Furthermore, the power supply moving contact 5-0 includes an elastic power supply moving contact arm 5-01, one end of the power supply moving contact arm 5-01 is fixed and the other end is provided with a power supply contact 5-00 for closing and disconnecting with the power supply static contact 5-1; the rotating shaft 3s presses the power supply moving contact arm 5-01 to deform it during the closing process of the moving contact device 3g and the static contact 4, so that the power supply moving contact 5-0 and the power supply static contact 5-1 are closed, that is, the power supply moving contact arm 5-01 drives the power supply contact 5-00 and the power supply static contact 5-1 to close; when the moving contact device 3g is disconnected from the static contact 4, the rotating shaft 3s avoids the power supply moving contact arm 5-01, and the power supply moving contact arm 5-01 is reset to separate and disconnect the power supply moving contact 5-0 and the power supply static contact 5-1. The power supply movable contact arm 5-01 is an elastic member that both conducts the power supply circuit of the residual current release t and provides a reset force for itself, thereby simplifying the structure of the power supply switch mechanism 5 and reducing the number of components of the power supply switch mechanism 5. Furthermore, the rotating shaft 3s of the movable contact assembly 3g includes a trigger portion 3a. During the closing process of the movable contact assembly 3g and the static contact 4, the trigger portion 3a rotates synchronously with the rotating shaft 3s and is used to press against the power supply movable contact 5-0, closing the power supply movable contact 5-0 with the power supply static contact 5-1. When the movable contact assembly 3g and the static contact 4 are disconnected, the trigger portion 3a rotates with the rotating shaft 3s to avoid the power supply movable contact 5-0, reset the power supply movable contact 5-0, and disconnect from the power supply static contact 5-1. In this embodiment, the specific shape of the trigger portion 3a and the connection relationship between the trigger portion 3a and the rotating shaft 3s (integral or detachable connection) are not specifically limited, as long as they can achieve the above functions. The trigger portion 3a is preferably an insulating structure.

[0110] Furthermore, the leakage release t and power switch mechanism 5 are arranged side by side with the bracket 2-0 along the first direction d1 and are both located on the same side of the bracket 2-0. The power switch mechanism 5 is located radially to one side of the movable contact assembly 3g. Furthermore, the leakage release t and the contact system 34 are arranged side by side along the second direction d2. The power switch mechanism 5 is located between the leakage release t and the contact system 34 in the second direction d2. The power movable contact arm 5-01 and the power static contact 5-1 are arranged side by side along the third direction d3. The layout of the operating mechanism 2, leakage release t, power switch mechanism 5, and contact system 34 is rational and compact, conserving internal space within the circuit breaker while ensuring stable and reliable operation of the power switch mechanism 5. This also simplifies the circuit breaker's internal wiring structure. The power moving contact 5-0 and the power stationary contact 5-1 are arranged side by side along the third direction d3, facilitating transmission coordination between the power moving contact 5-0 and the rotating shaft 3s of the moving contact assembly 3g, while also ensuring structural precision requirements for the power moving contact 5-0 and the rotating shaft 3s. Furthermore, the operating mechanism 2, leakage release t, and open switch mechanism 5 are located on the same side of the control circuit board p in the third direction d3.

[0111] As other embodiments of the arrangement of the power supply moving contact 5-0 and the power supply stationary contact 5-1, the power supply moving contact 5-0 and the power supply stationary contact 5-1 are not only limited to being arranged side by side along the third direction d3, but also can be arranged side by side and spaced apart along the second direction d2, or arranged side by side and spaced apart along the first direction d1, and so on, which are not listed one by one here.

[0112] As shown in Figures 8-11 , the power supply moving contact 5-0 and / or the power supply stationary contact 5-1 are fixedly arranged on the bracket 2-0 of the operating mechanism 2, that is, both of them can be fixedly arranged on the bracket 2-0, or any one of them is arranged on the bracket 2-0 and the other is fixedly arranged on other structures (such as the housing 1). In this embodiment, the power supply moving contact 5-0 and the power supply stationary contact 5-1 are preferably arranged on the bracket 2-0, which is beneficial to improve the integration of each component of the circuit breaker and improve the assembly efficiency.

[0113] As shown in Figures 8-11 , one implementation of the power supply moving contact 5-0 fixedly arranged on the bracket 2-0: the power supply moving contact 5-0 is fixedly arranged on the bracket 2-0. Further, the power supply moving contact 5-0 further comprises a power supply mounting plate 5-02, the power supply mounting plate 5-02 is perpendicular to the first direction d1 and connected with the one end of the power supply moving contact 5-01; the bracket first side plate 2-001 is an insulating structure (that is, the bracket first side plate 2-001 is made of insulating material) and comprises a first bracket slot 2-020 arranged thereon, the power supply mounting plate 5-02 is inserted into the first bracket slot 2-020. Further, the bracket 2-0 further comprises a clamping plate 2-02, the clamping plate 2-02 is arranged on one side of the bracket first side plate 2-001 along the first direction d1 and connected with the bracket first side plate 2-001, and the first bracket slot 2-020 is arranged between the clamping plate 2-02 and the bracket first side plate 2-001.

[0114] As shown in Figures 8-11As shown, it is one implementation mode that the power supply static contact 5-1 is fixedly arranged on the bracket 2-0: the bracket 2-0 further comprises a bracket carrier 2-03, one end of the bracket carrier 2-03 is connected with the bracket first side plate 2-001 and the bracket carrier 2-03 comprises a carrier mounting slot 2-030 arranged on one side thereof, and a second bracket slot 2-031 is arranged on each side wall of the carrier mounting slot 2-030; the power supply static contact 5-1 comprises a power supply static contact plate 5-10 arranged parallel to the first direction d1 and the second direction d2, the power supply static contact plate 5-10 is arranged in the carrier mounting slot 5-230 and the two ends of the power supply static contact plate 5-10 are respectively inserted into the two second bracket slots 2-031. The power supply static contact 5-1 is simple and reliable to install with the bracket carrier 2-03. Further, one end of the bracket carrier 2-03 is arranged on the clamping plate 2-02. Further, the bracket main body 2-00, the clamping plate 2-02 and the bracket carrier 2-03 are of an integrated structure; or, the clamping plate 2-02 and the bracket carrier 2-03 are of an integrated structure, and the clamping plate 2-02 and the bracket first side plate 2-001 of the bracket main body 2-00 are detachably installed together.

[0115] As shown in FIG. 1, it is one embodiment of the power supply static contact 5-1: the power supply static contact 5-1 comprises a power supply static contact plate 5-10 arranged parallel to the first direction d1 and the second direction d2, the power supply static contact plate 5-10 is arranged in the carrier mounting slot 5-230 and the two ends of the power supply static contact plate 5-10 are respectively inserted into the two second bracket slots 2-031. The power supply static contact 5-1 is simple and reliable to install with the bracket carrier 2-03. Further, one end of the bracket carrier 2-03 is arranged on the clamping plate 2-02. Further, the bracket main body 2-00, the clamping plate 2-02 and the bracket carrier 2-03 are of an integrated structure; or, the clamping plate 2-02 and the bracket carrier 2-03 are of an integrated structure, and the clamping plate 2-02 and the bracket first side plate 2-001 of the bracket main body 2-00 are detachably installed together. Figures 8-10 As shown in FIG. 1, it is one embodiment of the power supply static contact 5-1: the power supply static contact 5-1 comprises a power supply static contact plate 5-10 arranged parallel to the first direction d1 and the second direction d2, the power supply static contact plate 5-10 is arranged in the carrier mounting slot 5-230 and the two ends of the power supply static contact plate 5-10 are respectively inserted into the two second bracket slots 2-031. The power supply static contact 5-1 is simple and reliable to install with the bracket carrier 2-03. Further, one end of the bracket carrier 2-03 is arranged on the clamping plate 2-02. Further, the bracket main body 2-00, the clamping plate 2-02 and the bracket carrier 2-03 are of an integrated structure; or, the clamping plate 2-02 and the bracket carrier 2-03 are of an integrated structure, and the clamping plate 2-02 and the bracket first side plate 2-001 of the bracket main body 2-00 are detachably installed together.

[0116] As shown in FIG. 1, it is one embodiment of the power supply static contact 5-1: the power supply static contact 5-1 comprises a power supply static contact plate 5-10 arranged parallel to the first direction d1 and the second direction d2, the power supply static contact plate 5-10 is arranged in the carrier mounting slot 5-230 and the two ends of the power supply static contact plate 5-10 are respectively inserted into the two second bracket slots 2-031. The power supply static contact 5-1 is simple and reliable to install with the bracket carrier 2-03. Further, one end of the bracket carrier 2-03 is arranged on the clamping plate 2-02. Further, the bracket main body 2-00, the clamping plate 2-02 and the bracket carrier 2-03 are of an integrated structure; or, the clamping plate 2-02 and the bracket carrier 2-03 are of an integrated structure, and the clamping plate 2-02 and the bracket first side plate 2-001 of the bracket main body 2-00 are detachably installed together. Figures 8-10As shown, one embodiment of the power supply static contact 5-1 is shown: the power supply static contact 5-1 includes a power supply static contact plate 5-10 and a power supply static terminal plate 5-11, one end of the power supply static terminal plate 5-11 is connected with the middle bending of the power supply static contact plate 5-10, both are in the form of T-shaped structure in the unfolded state, one side of the power supply static contact plate 5-10 is used for facing the power supply moving contact arm 5-01, the power supply static contact plate 5-10 is bent to the other side of the power supply static contact plate 5-10, that is, the power supply moving contact arm 5-01 and the power supply static terminal plate 5-11 are located on both sides of the power supply static contact plate 5-10. Further, the power supply static contact plate 5-10 and the power supply terminal plate 5-11 are of an integrated structure.

[0117] As shown in Figures 2-3 , 5, 14-17, 21-23, another improvement point of the circuit breaker is that: it comprises a second power taking mechanism 9 matched with the contact system c, the contact system c matched with the second power taking mechanism 9 is a phase pole contact system and is called a second contact system, the second power taking mechanism 9 comprises a fixedly arranged bearing 9-0 and a power taking device 9d installed on the bearing 9-0, the power taking device 9d comprises a second power taking arm 9-11, and the power taking device 9d is also used for being electrically connected with a control circuit board p of the circuit breaker and providing working power supply for the control circuit board p; in the process that a moving contact mechanism 3 of the second contact system is closed with a static contact 4, a contact spring 3-2 is in contact with the second power taking arm 9-11 and is conducted; in the open state of the moving contact mechanism 3 of the second contact system and the static contact 4, the contact spring 3-2 is separated from the second power taking arm 9-11 and is disconnected.

[0118] The second power taking mechanism 9 brings the following benefits: the power taking device 9d is installed on the bearing 9-0, which is convenient for overall installation and dismounting of the second power taking mechanism 9 and is conducive to improving operation efficiency; the second power taking arm 9-11 and the contact spring 3-2 are matched to form a breakpoint between the contact system c and the control circuit board p, no matter how the circuit breaker is wired (the moving contact mechanism 3 is electrically connected with a power supply side conductor through a wiring terminal, and the static contact 4 is electrically connected with a load side conductor through a wiring terminal, or the moving contact mechanism 3 is electrically connected with the load side conductor through the wiring terminal, and the static contact 4 is electrically connected with the power supply side conductor through the wiring terminal), in the open state of the moving contact mechanism 3 and the static contact 4 (that is, in the open state of the circuit breaker), the breakpoint is also in the open state, so that the control circuit board p and the contact system c are both in the open state, thus, dielectric performance test can be performed on an electronic component board end (the electronic component board end refers to a wiring terminal of the circuit breaker directly connected with the control circuit board p through a connecting conductor), and damage to components on the control circuit board p is avoided, and the safety performance of the circuit breaker is improved.

[0119] Further, the second power taking member 9-1 further comprises a second power taking contact 9-10 arranged on the second power taking arm 9-11, and the second power taking contact 9-10 is used to close and open with the spring contact arm 3-20 of the contact spring 3-2, which is conducive to improving the reliability of the contact conduction between the second power taking member 9-1 and the contact spring 3-2.

[0120] Further, the power taking device 9d comprises the second power taking member 9-1 and the cylindrical conductive rod 9-2, and the carrier 9-0 is fixedly arranged and comprises a carrier mounting slot 9-00, and the two side walls of the carrier mounting slot 9-00 are each provided with a carrier clamping slot 9-01; the second power taking member 9-1 comprises a second power taking arm 9-11 and a second mounting plate 9-12 which are connected by bending; in the process of closing the movable contact mechanism 3 and the static contact 4 of the second contact system, the contact spring 3-2 is in contact with the second power taking arm 9-11; in the open state of the movable contact mechanism 3 and the static contact 4 of the second contact system, the contact spring 3-2 is separated from the second power taking arm 9-11 and is disconnected; the conductive rod 9-2 comprises a contact rod 9-20 arranged at one end thereof, and the other end of the conductive rod 9-20 is used to extend to the position of the control circuit board p and is electrically connected thereto; the contact rod 9-20 is arranged in the carrier mounting slot 9-00, the second mounting plate 9-12 is inserted into the carrier mounting slot 9-00 along the second direction d2, and the two side edges thereof are respectively inserted into the two carrier clamping slots 9-01, and the second mounting plate 9-12 and the bottom wall of the carrier mounting slot 9-00 clamp and electrically connect with the contact rod 9-20, that is, the contact rod 9-20 is in interference fit with the second mounting plate 9-12, which not only realizes the fixation of the contact rod 9-20, but also realizes the electrical connection between the contact rod 9-20 and the second mounting plate 9-12. Further, the cylindrical conductive rod 9-2 can be a circular cylinder or a regular polygonal column.

[0121] The carrier 9-0 of the second power taking mechanism 9 integrates the second power taking member 9-1 and the conductive rod 9-2, which is conducive to the installation and layout of the second power taking mechanism 9, the second mounting plate 9-12 and the bottom wall of the carrier mounting slot 9-00 clamp and electrically connect with the contact rod 9-20, which not only realizes the installation of the carrier 9-0, the second power taking member 9-1 and the conductive rod 9-2, but also realizes the electrical connection between the second power taking member 9-1 and the conductive rod 9-2, which is simple to assemble, the cylindrical conductive rod 9-2 has better current carrying capacity and is easy to shape, can well maintain the shape, and requires less space under certain current carrying conditions.

[0122] As other embodiments of the power taking device 9d, the power taking device 9d is of an integrated structure, for example, is formed by cutting and bending a metal conductive plate.

[0123] Further, the plane in which the second mounting plate 9-12 is located is perpendicular to the first direction d1 and the second mounting plate 9-12 extends along the second direction d2, and the first power taking arm 9-11 extends along the first direction d1. Specifically, the first power taking arm 9-11 is arranged to cross the spring contact arm 3-20 of the contact spring 3-2, and the two are preferably arranged to cross each other in a cross shape.

[0124] Further, the conductive rod 9-2 is also limited in position with respect to the carrier 9-0 and the second power taking member 9-1, and movement of the conductive rod 9-2 with respect to the carrier 9-0 and the second power taking plate 9-1 is prevented.

[0125] Specifically, as shown in Figures 14-15 The carrier 9-0 further includes a carrier positioning groove 9-09 arranged on the bottom wall of the carrier mounting groove 9-00, and the contact rod 9-20 is arranged in the carrier positioning groove 9-09. The contact rod 9-20 is adapted to the cross-sectional shape of the carrier positioning groove 9-09, and the second mounting plate 9-12 is limited in position with respect to the contact rod 9-20 to keep it in the carrier positioning groove 9-09, thereby preventing at least movement of the conductive rod 9-2 in the radial direction of the contact rod 9-20. Further, the second mounting plate 9-12 includes a second mounting plate opening 9-120 arranged in the middle thereof, and a second contact finger 9-121 arranged in the second mounting plate opening 9-120. The second contact finger 9-121 extends in the axial direction of the contact rod 9-20 and is connected at one end to the side of the second mounting plate opening 9-120 and is inclined at the other end towards the contact rod 9-20 to press the contact rod 9-20. The second contact finger 9-121 ensures reliable contact and electrical connection between the second mounting plate 9-12 and the contact rod 9-20, and reliably limits the second contact rod 9-20 in the carrier positioning groove 9-09.

[0126] As another embodiment of the cooperation between the carrier 9-0, the contact rod 9-20 and the second mounting plate 9-12, the bottom wall of the carrier mounting groove 9-00 is not provided with the carrier positioning groove 9-09, and a mounting plate positioning groove is arranged in the middle of the second mounting plate 9-12. The mounting plate positioning groove is limited in position with respect to the contact rod 9-20, and the cross-sectional shape of the mounting plate positioning groove is adapted to that of the contact rod 9-20. The second mounting plate 9-12 can also not be provided with the second mounting plate opening 9-120 and the second contact finger 9-121, but at least one protruding rib crossing the contact rod 9-20 is arranged on the side of the second mounting plate 9-12 facing the bottom wall of the carrier positioning groove 9-09, to press the contact rod 9-20 in the carrier positioning groove 9-09 and ensure reliable contact and electrical connection between the second mounting plate 9-12 and the contact rod 9-20.

[0127] Specifically, as shown in Figures 14-17As shown, the second power-collecting component 9-1 also includes a power-collecting component limiting plate 9-134, one end of the power-collecting component 9-134 is bent and connected to the second mounting plate 9-12, the supporting component 9-0 is used to cooperate with the housing 1 of the circuit breaker, and at least a part of the power-collecting component limiting plate 9-134 (preferably the other end of the power-collecting component limiting plate 9-134) is limited between the supporting component 9-0 and the housing 1, that is, at least a part of the power-collecting component limiting plate 9-134 is located between the supporting component 9-0 and the housing 1 and is respectively limited and cooperated with the two to limit the movement of the second power-collecting component 9-1 along the second direction d2; the conductive rod 9-2 also includes an upper connecting rod 9-21 and an upper extension rod 9-22, one end of the upper connecting rod 9-21 is bent and connected to one end of the contact rod 9-20 and the other end is bent to one end of the upper extension rod 9-22 The upper connecting rod 9-21 is folded and connected, and the other end of the upper extension rod 9-22 is used to electrically connect with the control circuit board p, the upper connecting rod 9-21 and the contact rod 9-20 are coplanar and the upper extension rod 9-22 is located on one side of the plane; the carrier 9-0 also includes a carrier transverse limit groove 9-02 and a carrier vertical limit groove 9-010, one end of the carrier transverse limit groove 9-02 is bent and connected with one end of the carrier positioning groove 9-09 and the other end is bent and connected with one end of the carrier vertical limit groove 9-010; the upper connecting rod 9-21 is arranged in the carrier transverse limit groove 9-02, and the upper extension rod 9-22 is arranged in the carrier vertical limit groove 9-010, and the power-taking component limit plate 9-134 is opposite to at least one section of the carrier vertical limit groove 9-010 to limit the upper extension rod 9-22 in the carrier vertical limit groove 9-010. Furthermore, at least a portion of the power-taking component limit plate 9-134 is cross-arranged with at least a section of the vertical limit groove 9-010 of the support component; the upper connecting rod 9-21 extends along the first direction d1, and the upper extension rod 9-22 extends along the third direction d3, which also means that the upper extension rod 9-22 is perpendicular to the plane where the upper connecting rod 9-21 and the contact rod 9-20 are located. Furthermore, the power-collecting component limiting plate 9-134 includes a second connecting plate 9-13 and a second limiting plate 9-14, one end of the second connecting plate 9-13 is bent and connected to the second mounting plate 9-12 and the other end is connected to one end of the second limiting plate 9-14, the second connecting plate 9-13 and the second limiting plate 9-14 are coplanar and both are perpendicular to the second direction d2, the supporting member 9-0 is used to cooperate with the shell 1 to limit at least part of the second limiting plate 9-14 (preferably the free end of the second limiting plate 9-14) between the supporting member 9-0 and the shell 1, thereby preventing the second power-collecting component 9-1 from moving along the second direction d2, and preventing the second mounting plate 9-12 from falling out of the supporting member mounting groove 9-00.

[0128] like Figures 14-15 The figure shows an embodiment of the second power-collecting component 9-1.

[0129] The second power taking member 9-1 of the embodiment comprises a second power taking arm 9-11, a second mounting plate 9-12 and a power taking member limiting plate 9-134, the second power taking arm 9-11 and the power taking member limiting plate 9-134 are respectively connected with the two ends of the second mounting plate 9-12 and are respectively bent to the two sides of the plane where the second mounting plate 9-12 is located. The second mounting plate 9-12 preferably comprises a second mounting plate opening 9-120 arranged in the middle part thereof and a second contact finger 9-121 arranged in the middle part of the second mounting plate opening 9-120, one end of the second contact finger 9-121 is connected with the side of the second mounting plate opening 9-120 and the other end is inclined to the side where the power taking member limiting plate 9-134 is located. The second power taking arm 9-11 and the power taking member limiting plate 9-134 are preferably respectively connected with the right angle bending of the second mounting plate 9-12, the second power taking arm 9-11 is preferably a plate structure and it and the power taking member limiting plate 9-134 are parallel to each other. The power taking member limiting plate 9-134 preferably comprises a second connecting plate 9-13 and a second limiting plate 9-14, one end of the second connecting plate 9-13 is connected with the bending of the second mounting plate 9-12 and the other end is connected with the second limiting plate 9-14, the second connecting plate 9-13 and the second limiting plate 9-14 are coplanar and the whole is in the shape of L. The second power taking member 9-1 of the embodiment further comprises a second power taking contact 9-10, which is arranged on the end of the second power taking arm 9-11 away from the second mounting plate 9-12, for closing and opening with the contact spring 3-2.

[0130] As shown in Figure 15 and 17 , it is one embodiment of the conductive rod 9-2.

[0131] The conductive rod 9-2 of the embodiment comprises a contact rod 9-20, an upper connecting rod 9-21, an upper extending rod 9-22, a lower connecting rod 9-23 and a lower extending rod 9-24 connected in sequence, the contact rod 9-20 and the upper connecting rod 9-21 are coplanar and the plane is perpendicular to the third direction d3, the upper connecting rod 9-21 and the upper extending rod 9-22 are coplanar and the plane is perpendicular to the second direction d2, the upper extending rod 9-22, the lower connecting rod 9-23 and the lower extending rod 9-24 are coplanar and the plane is perpendicular to the first direction d1, the three are in the shape of Z as a whole, the three planes are perpendicular to each other, the lower extending rod 9-24 is arranged parallel to the upper extending rod 9-22 and the lower extending rod 9-24 is offset to the side away from the upper connecting rod 9-21 and the contact rod 9-20 relative to the upper extending rod 9-22, the free end of the lower extending rod 9-24 is used for electrical connection with the control circuit board p.

[0132] As shown in Figures 3-7 , 14-20, the implementation mode of the fixed arrangement of the bearing member 9-0 will be described below.

[0133] The carrier 9-0 further comprises a carrier bay 9-07 arranged at one end of the carrier 9-0, and a carrier first leg 9-034 and a carrier second leg 9-056 respectively arranged at two sides of the carrier bay 9-07, the carrier 9-0 is arranged across the corresponding support connecting shaft 3c and between two adjacent supports 3-0 through the carrier bay 9-07, and the carrier first leg 9-034 and the carrier second leg 9-056 are respectively arranged at two radial sides of the support connecting shaft 3c and abut against the base 1-1 along the third direction respectively; the upper cover 1-0 and the base 1-1 are respectively limited with the carrier 9-0 to fix the carrier 9-0 in the working position.

[0134] Specifically, as shown in Figures 3-6 The base 1-1 comprises a partition wall 1-1s arranged in the base 1-1, the partition wall 1-1s is provided with a support shaft slot 1-15 corresponding to the support connecting shaft 3s, the support shaft slot 1-15 is preferably arranged in a better rotating support of the movable contact device 3g, and the partition wall 1-1s is arranged between adjacent contact systems c, that is, the partition wall 1-1s separates adjacent contact systems c to improve the insulation distance and the creepage distance between adjacent phases of the circuit breaker, and the carrier first leg 9-034 and the carrier second leg 9-056 abut against the corresponding partition wall 1-1s along the third direction d3, and the partition wall 1-1s matched with the carrier 9-0 is a support partition wall. It should be pointed out that the number of the partition wall 1-1s is arranged according to the number of phases of the circuit breaker of the utility model, for example, when the circuit breaker of the utility model is a two-phase circuit breaker, one partition wall 1-1s is arranged in the base 1-1 to divide the internal space of the base 1-1 into two parts (each part is provided with one contact cavity 1-14), which are respectively used to accommodate L-phase circuit and N-phase circuit of the circuit breaker, the L-phase circuit comprises the contact system c, and the N-phase circuit comprises the contact system c or is a straight-through circuit; when the circuit breaker of the utility model is a four-phase circuit breaker, three partition walls 1-1s are arranged in the base 1-1 to divide the internal space of the base 1-1 into four parts, which are respectively used to accommodate A-phase circuit, B-phase circuit, C-phase circuit and N-phase circuit of the circuit breaker, the A-phase circuit, the B-phase circuit and the C-phase circuit all comprise the contact system c, and the N-phase circuit comprises the contact system c or is a straight-through circuit.

[0135] Further, the support partition wall comprises a front support part 1-10 matched with the carrier first leg 9-034 and a rear support part 1-13 matched with the carrier second leg 9-056, the front support part 1-10 and the rear support part 1-13 are respectively arranged at two radial sides of the corresponding support connecting shaft 3s, that is, the carrier first leg 9-034 abuts against the front support part 1-10 along the third direction d3, and the carrier second leg 9-056 abuts against the rear support part 1-13 along the third direction d3.

[0136] The front support part 1-10 comprises a first sub-part 1-100 and a second sub-part 1-101 oppositely arranged along a first direction d1, a base clamping groove 1-102 is formed between the first sub-part 1-100 and the second sub-part 1-101, and the second sub-part 1-101 is provided with a right-angle groove 1-1010 extending along a third direction d3; the carrier first leg 9-034 comprises a first sub-side wall 9-03 and a second sub-side wall 9-04 oppositely arranged along the first direction d1, a carrier vertical limiting groove 9-010 for accommodating an upper extension rod 9-22 of the conductive rod 9-2 is formed between the first sub-side wall 9-03 and the second sub-side wall 9-04, the second sub-side wall 9-04 comprises an axial limiting table 9-040 and a radial limiting table 9-041 arranged at a free end thereof, the axial limiting table 9-040 is arranged in the base clamping groove 1-102 and is in limiting cooperation with the first sub-part 1-100 and the second sub-part 1-101 respectively, thereby preventing the limiting part 9-0 from moving along the first direction d1, the radial limiting table 9-041 abuts against an end of the first sub-part 1-100 along the third direction d3, the first sub-side wall 9-03 is inserted into the right-angle groove 1-1010, and the second limiting plate 9-14 of the second power taking part 9-1 is arranged side by side with one side of the right-angle groove 1-1010 along a second direction d2 and is limited between the side and the second sub-side wall 9-03.

[0137] The rear support part 1-13 comprises a base limiting wall 1-130, a base blocking wall 1-131 and a base positioning groove 1-132, two base limiting arms 1-130 are oppositely arranged along a first direction d1, the base blocking wall 1-131 and the base positioning groove 1-132 are arranged side by side along a second direction d2, and the base positioning groove 1-132 is arranged away from the front support part 1-10 along the second direction d2 relative to the base blocking wall 1-131; the carrier second leg 9-056 comprises a leg stem 9-05 and a limiting foot 9-06, the leg stem 9-05 is oppositely arranged with the carrier first leg 9-034, and one end of the limiting foot 9-06 is connected with one end of the leg stem 9-05 by bending; the leg stem 9-05 is located between the two base limiting walls 1-130 along the first direction d1, thereby preventing the carrier 9-0 from moving along the first direction d1, the leg stem 9-05 is in limiting cooperation with the base blocking wall 1-131 along the second direction d2 and is located on both sides of the base blocking wall 1-131 relative to the front support part 1-10, the limiting foot 9-06 is inserted into the base positioning groove 1-132 along a third direction d3, and the shape of the base positioning groove 1-132 is matched with the shape of the limiting foot 9-06, thereby preventing the carrier 9-0 from moving along the first direction d1 and the second direction d2.

[0138] Further, the upper cover 1-0 includes an upper cover pressing rib 1-00 and an upper cover positioning rib 1-01, the upper cover pressing rib 1-00 is in abutment with the end of the carrier 9-0 away from the base 1-1 (the end of the carrier 9-0 is provided with a carrier limiting surface 9-08), and the upper cover positioning rib 1-01 is in abutment with the limiting foot 9-06 along the third direction d3, limiting the limiting foot 9-06 in the base positioning groove 1-132.

[0139] As shown in Figures 14-16 , an embodiment of the carrier 9-0.

[0140] The carrier 9-0 of the embodiment includes a carrier mounting groove 9-00 provided on one side of one end thereof and a carrier bayonet 9-07 provided at the other end thereof, the carrier mounting groove 9-00 and the carrier bayonet 9-07 are arranged side by side along the third direction d3; the carrier 9-0 of the embodiment further includes a carrier first leg 9-034 and a carrier second leg 9-056, the carrier first leg 9-034, the carrier second leg 9-056 and the carrier bayonet 9-07 are located at the same end of the carrier 9-0 along the third direction d3, and the carrier first leg 9-034 and the carrier second leg 9-056 are located outside the carrier bayonet 9-07 along the second direction d2. The carrier mounting groove 9-00 extends along the second direction d2, and a bottom wall thereof is provided with a carrier positioning groove 9-09 extending along the second direction d2, and each of a pair of side walls thereof is provided with a carrier clamping groove 9-01. The two carrier clamping grooves 9-01 are oppositely arranged along the third direction d3. The carrier first leg 9-034 includes a first sub-side wall 9-03 and a second sub-side wall 9-04 arranged side by side and spaced apart along the first direction d1, and a carrier vertical limiting groove 9-010 extending along the third direction d3 is formed between the first sub-side wall 9-03 and the second sub-side wall 9-04. The second sub-side wall 9-04 is provided with a carrier horizontal limiting groove 9-02 extending along the first direction d1, and a free end of the second sub-side wall 9-04 is provided with an axial limiting platform 9-040 and a radial limiting platform 9-041, the axial limiting platform 9-040 is protrusively arranged along the third direction d3 away from the carrier mounting groove 9-00, and the radial limiting platform 9-041 is protrusively arranged along the first direction d1 away from the first sub-side wall 9-040. The carrier second leg 9-056 includes a leg stem 9-05 extending along the third direction d3 and a limiting foot 9-06 extending along the second direction d2 and connected to the leg stem 9-05 by bending, the limiting foot 9-06 extends away from the carrier first leg 9-034 along the second direction d2, and the limiting foot 9-06 is preferably a square column structure.

[0141] As shown in Figures 2-3, 5, 21-23, the circuit breaker of the utility model includes at least two groups of second power taking mechanism 9, and the control circuit board p obtains working power supply through multiple groups of second power taking mechanism 9, which guarantees the reliability of power supply of the control circuit board p.Further, the control circuit board p is equipped with a rectifier circuit, the rectifier circuit can be realized by prior art, and the rectifier circuit is electrically connected with the corresponding contact system c through the second power taking mechanism 9 to obtain the working power supply of the control circuit board p.

[0142] Specifically, the circuit breaker of the utility model includes two groups of second power taking mechanism 9, the carrier 9-0 of one group of second power taking mechanism 9 is arranged between the movable contact mechanism 3 of the A-phase contact system and the B-phase contact system, and the second power taking mechanism 9 is matched with the movable contact mechanism 3 of the A-phase contact system, and the carrier 9-0 of the other group of second power taking mechanism 9 is arranged between the movable contact mechanism 3 of the B-phase contact system and the C-phase contact system, and the second power taking mechanism 9 is matched with the movable contact mechanism 3 of the B-phase contact system.

[0143] It should be pointed out that the circuit breaker of the utility model can also be provided with three groups of second power taking mechanism 9, the three groups of second power taking mechanism 9 are matched with the A-phase contact system, the B-phase contact system and the C-phase contact system respectively, the carrier 9-0 of the first group of second power taking mechanism 9 is arranged between the movable contact mechanism 3 of the A-phase contact system and the B-phase contact system, and the second power taking mechanism 9 is matched with the movable contact mechanism 3 of the A-phase contact system, the carrier 9-0 of the second group of second power taking mechanism 9 is arranged between the movable contact mechanism 3 of the B-phase contact system and the C-phase contact system, and the second power taking mechanism 9 is matched with the movable contact mechanism 3 of the B-phase contact system, and the carrier 9-0 of the third group of second power taking mechanism 9 is arranged between the movable contact mechanism 3 of the C-phase contact system and the N-phase contact system, and the second power taking mechanism 9 is matched with the movable contact mechanism 3 of the C-phase contact system.

[0144] As Figures 2-3, 5, 8, 10, 12-13, 21-23, 25-27, another improvement point of the circuit breaker of the utility model lies in: it still includes test button 6 and first power taking mechanism 7 matched with contact system c one by one, and the contact system c matched with first power taking mechanism 7 is matched as phase pole contact system and called first contact system, and the contact spring 3-2 of first contact system is first spring;First power taking mechanism 7 includes test arm 7-2 and power taking arm 7-3;Test button 6 is transmission matched with test arm 7-2, and is used for testing the leakage protection function of circuit breaker, that is, test button 6 drives test arm 7-2 to act and thereby connects the leakage test circuit of circuit breaker, simulates the leakage fault, and thereby tests the leakage protection function of circuit breaker;The first spring is contacted and conducted with power taking arm 7-3 during the closing process of the movable contact mechanism 3 of first contact system and static contact 4;When the movable contact mechanism 3 of first contact system and static contact 4 are disconnected, power taking arm 7-3 is separated from first spring and disconnected;First power taking mechanism 7 is also used for being electrically connected with control circuit board p to provide working power supply.

[0145] First power taking mechanism 7 is matched with test button 6 to realize the leakage test function of the circuit breaker of the utility model, and first power taking mechanism 7 can also provide working power supply for control circuit board p, which is conducive to simplifying the structure of the circuit breaker of the utility model;And first power taking mechanism 7 is matched with contact spring 3-2 to form a breakpoint, and the breakpoint is also in the disconnected state when first contact system is in the disconnected state, thereby ensuring that the power supply circuit between control circuit board p and first power taking mechanism 7 is also disconnected when first contact system is in the disconnected state, so that the dielectric performance test can be carried out on the electronic component board end, the components on control circuit board p are not damaged, and the product performance is improved.

[0146] Further, the first spring is contacted and conducted with power taking arm 7-3 before the movable contact mechanism 3 of first contact system and static contact 4 are contacted and conducted, and the first spring is disconnected with power taking arm 7-3 after the movable contact mechanism 3 of first contact system and static contact 4 are disconnected.The above design eliminates or significantly reduces the possibility of electric arc generated by the closing and opening of first spring and power taking arm 7-3, which is conducive to prolonging the service life of contact spring 3-2 and first power taking mechanism 7, and reducing the current-carrying capacity requirement of first spring and first power taking mechanism 7, which is conducive to reducing production cost.Specifically, the opening distance of movable contact mechanism 3 and static contact 4 of first contact system is greater than the opening distance of first spring and power taking arm 7-3.

[0147] Further, as shown in Figure 12 And 26As shown, the second side plate 2-01 of the bracket 2-0 is a conductive member, that is, the second side plate 2-01 of the bracket is made of a conductive material (such as a metal plate); the second side plate 2-01 of the bracket includes a side plate contact portion 2-010 that cooperates with the test arm 7-2, and the test arm 7-2 is driven by the test button 6 to contact and conduct with the test plate contact portion 2-010; the second side plate 2-01 of the bracket also includes a side plate connecting portion 2-011, which is used to electrically connect to the N-phase circuit of the circuit breaker; the test contact portion 2-01 and the side plate connecting portion 2-011 are respectively located at both ends of the second side plate 2-01 of the bracket in the third direction d3. As a component of the test circuit of the circuit breaker, the second side plate 2-01 of the bracket is conducive to simplifying the structure of the circuit breaker and reducing the number of components in the test circuit of the circuit breaker.

[0148] Furthermore, the first contact system is arranged side by side with the operating mechanism 2 along the first direction d1. Specifically, the first contact system is arranged side by side with the bracket 2-0 of the operating mechanism 2 along the first direction d1, the first contact system is located on one side of the first side plate 2-001 of the bracket, and the second side plate 2-01 of the bracket is located on the other side of the first side plate 2-001 of the bracket.

[0149] Furthermore, the bracket 2-0 cooperates with the first power supply mechanism 7 to limit it in the working position, that is, the first power supply mechanism 7 cooperates with the bracket 2-0 to limit the movement of the first power supply mechanism 7 relative to the bracket 2-0, so that the first power supply mechanism 7 remains in the working position.

[0150] like Figures 2-3 , 5, 8, 10, and 13 are the first embodiment of the first power taking mechanism 7:

[0151] The first power collection mechanism 7 of this embodiment includes a first power collection component 7-0 and a first conductive component 7-1. The first power collection component 7-0 is fixedly arranged on the bracket 2-0. The first power collection component 7-0 includes a test arm 7-2 and a power collection arm 7-3. One end of the first conductive component 7-1 is electrically connected to the first power collection component 7-0 and the other end extends to the location of the control circuit board p and is electrically connected to it.

[0152] Further, the first power taking member 7-0 is a torsion spring and is fixed on the support 2-0 by limiting cooperation with the support 2-0 (i.e. the first power taking member 7-0 is fixed in the working position), the first power taking member 7-0 comprises a spiral body 7-00 and a first spring arm and a second spring arm connected with the spiral body 7-00 respectively, the first spring arm is used as a test arm 7-2, and the second spring arm is used as a power taking arm 7-3. Further, the free ends of the first spring arm and the second spring arm respectively extend to both sides of the spiral body 7-00 along the radial direction of the spiral body 7-00. Further, the support body 2-00 further comprises a test arm limiting portion 2-0021, one end of the first spring arm is connected with the spiral body 7-00, the other end is in limiting cooperation with the test arm limiting portion 2-0021 and transmission cooperation with the test button 6.

[0153] Further, the first power taking member 7-0 is a torsion spring and is fixed on the support 2-0 by limiting cooperation with the support 2-0 (i.e. the first power taking member 7-0 is fixed in the working position), the first power taking member 7-0 comprises a spiral body 7-00 and a first spring arm and a second spring arm connected with the spiral body 7-00 respectively, the first spring arm is used as a test arm 7-2, and the second spring arm is used as a power taking arm 7-3. Further, the free ends of the first spring arm and the second spring arm respectively extend to both sides of the spiral body 7-00 along the radial direction of the spiral body 7-00. Further, the support body 2-00 further comprises a test arm limiting portion 2-0021, one end of the first spring arm is connected with the spiral body 7-00, the other end is in limiting cooperation with the test arm limiting portion 2-0021 and transmission cooperation with the test button 6.

[0154] Further, the support mounting table 2-0020 is preferably arranged on the transverse portion 2-002 of the support body 2-00, and the test arm limiting portion 2-0021 is preferably arranged on the support mounting table 2-0020. Further, the surface of the support mounting table 2-0020 is parallel to the first direction d1 and the second direction d2 and perpendicular to the third direction d3.

[0155] As shown in Figs. Figures 22-23 , 25-27, the first power taking mechanism 7 is a second embodiment:

[0156] The first power taking mechanism 7 of the embodiment is an integrated component and is fixedly arranged on the support 2-0 in limiting cooperation (the first power taking mechanism 7 is limited in the working position), and includes a power taking main plate 7-5, a test arm 7-2, a power taking arm 7-3 and a power taking connecting arm 7-4 connected to the power taking main plate 7-5 respectively. One end of the power taking connecting arm 7-4 is connected to the power taking main plate 7-5, and the other end extends to the position where the control circuit board p is located and is electrically connected thereto.

[0157] The first power taking mechanism 7 is an integrated structure, which reduces the number of parts of the circuit breaker of the utility model, facilitates installation and disassembly, and improves assembly efficiency.

[0158] Further, the power taking main plate 7-5 is stacked on the support mounting table 2-0020, and the plane where the power taking main plate 7-5 is located is parallel to the surface of the support mounting table 2-0020. In the third direction d3, the test arm 7-2 and the power taking arm 7-3 are both located on the same side of the power taking main plate 7-5, and the power taking connecting arm 7-4 is located on the other side of the power taking main plate 7-5, that is, the test arm 7-2 and the power taking arm 7-3 are both located on one side of the plane where the power taking main plate 7-5 is located, and the power taking connecting arm 7-4 is located on the other side of the plane where the power taking main plate 7-5 is located. Further, the power taking connecting arm 7-4 is arranged side by side with the support first side plate 2-001 of the support 2-0 along the first direction d1, and the power taking connecting arm 7-4 is embedded in the groove of the support first side plate 2-001, which is simple to assemble and reliable in limiting. Further, the power taking connecting arm 7-4 also limits cooperation with the support first side plate 2-001, which prevents the first power taking mechanism 7 from moving along the first direction d1 and separating from the support first side plate 2-001.

[0159] Further, the support body 2-00 of the support 2-0 further comprises a test arm limiting portion 2-0021, a power taking arm limiting portion 2-0022, a power taking mainboard slot 2-0023, and a test arm blocking rib 2-0024. The power taking arm limiting portion 2-0022 and the power taking mainboard slot 2-0023 are oppositely arranged along the second direction d2. One end of the power taking mainboard 7-5 is inserted into the power taking mainboard slot 2-0023, and the other end is connected to the bending of the power taking arm 7-3. The power taking arm 7-3 abuts against the power taking arm limiting portion 2-0022 along the second direction d2. The test arm 7-2 comprises a test arm vertical portion 7-21 and a test arm horizontal portion 7-20. One end of the test arm vertical portion 7-21 is connected to the bending of the power taking mainboard 7-5 and abuts against one side of the test arm blocking rib 2-0024 along the first direction d1. The other end of the test arm vertical portion 7-21 is connected to the bending of one end of the test arm horizontal portion 7-20. The other end of the test arm horizontal portion 7-20 extends to the test arm limiting portion 2-0021 beyond the test arm blocking rib 2-0024 and is limited by the test arm limiting portion 2-0021. The test arm horizontal portion 7-20 is oppositely spaced apart from the table surface of the support mounting table 2-0020.

[0160] Further, the power taking arm 7-3 is also limited by the power taking arm limiting portion 2-0022 to prevent the first power taking mechanism 7 from moving along the first direction d1 away from the test arm blocking rib 2-0024. Specifically, the power taking arm 7-3 comprises a power taking arm mainboard 7-30 and a power taking arm limiting finger 7-31. The power taking arm limiting finger 7-31 is inclined away from the side where the power taking arm limiting portion 2-0022 is located, and the free end thereof abuts against the power taking arm limiting portion 2-0022 along the first direction d1 to limit the first power taking mechanism 7 from moving along the first direction d1 away from the test arm blocking rib 2-0024.

[0161] Further, the power taking arm limiting portion 2-0022 further comprises a power taking arm limiting step. One pair of side edges of the power taking arm 7-3 are connected to the bending of the power taking mainboard 7-5 and the other pair of side edges abut against the power taking arm limiting step along the third direction d3 to prevent the power taking mainboard 7-5 from moving away from the support mounting table 2-0020 along the third direction d3.

[0162] Further, as shown in FIG. 1, the test arm 7-2 comprises a test arm vertical portion 7-21 and a test arm horizontal portion 7-20. One end of the test arm vertical portion 7-21 is connected to the bending of the power taking mainboard 7-5 and abuts against one side of the test arm blocking rib 2-0024 along the first direction d1. The other end of the test arm vertical portion 7-21 is connected to the bending of one end of the test arm horizontal portion 7-20. The other end of the test arm horizontal portion 7-20 extends to the test arm limiting portion 2-0021 beyond the test arm blocking rib 2-0024 and is limited by the test arm limiting portion 2-0021. The test arm horizontal portion 7-20 is oppositely spaced apart from the table surface of the support mounting table 2-0020. Figure 27As shown, the power-taking connecting arm 7-4 includes a first connecting arm plate 7-40, a second connecting arm plate 7-41, a third connecting arm plate 7-42, a fourth connecting arm plate 7-43, a fifth connecting arm plate 7-44 and a sixth connecting arm plate 7-45 which are connected end to end in sequence. The two ends of the first connecting arm plate 7-40 are respectively bent and connected to the power-taking main board 7-5 and the second connecting arm plate 7-41. The first connecting arm plate 7-40, the second connecting arm plate 7-41, the third connecting arm plate 7-42, the fourth connecting arm plate 7-43, the fifth connecting arm plate 7-44 and the sixth connecting arm plate 7-45 are offset in sequence along the third direction d3 in the direction away from the power-taking main board 7-5 and in sequence along the second direction d2 in the direction away from the power-taking arm 7-3.

[0163] Furthermore, the power taking arm 7-3 is a plate structure, and the first power taking mechanism 7 also includes a power taking mechanism contact 7-6 arranged on the power taking arm 7-3, and the power taking mechanism contact 7-6 is used to close and open with the contact spring 3-2 of the first contact system.

[0164] It should be pointed out that the circuit breaker of the present invention can be provided with only the second power taking mechanism 9 or the first power taking mechanism 7 , or can be provided with both the second power taking mechanism 9 and the first power taking mechanism 7 .

[0165] like Figures 2-3 As shown in Figures 5, 21-23, the circuit breaker of the present invention is provided with two groups of second power-taking mechanisms 9 and one group of first power-taking mechanisms 7. The supporting parts 9-0 of one group of second power-taking mechanisms 9 are arranged between the moving contact mechanisms 3 of the A-phase contact system and the B-phase contact system, and the second power-taking mechanisms 9 cooperate with the moving contact mechanisms 3 of the A-phase contact system. The supporting parts 9-0 of the other group of second power-taking mechanisms 9 are arranged between the moving contact mechanisms 3 of the B-phase contact system and the C-phase contact system, and the second power-taking mechanisms 9 cooperate with the moving contact mechanisms 3 of the B-phase contact system. The first power-taking mechanism 7 cooperates with the moving contact mechanism 3 of the C-phase contact system.

[0166] The present utility model also discloses a power taking device, which includes a second power taking mechanism 9 and a contact system c coordinated with the second power taking mechanism 9. The specific structure and coordination relationship between the second power taking mechanism 9 and the contact system c are described above and will not be expanded here.

[0167] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are conventionally placed directions or positional relationships during use. They are intended solely for ease of description and do not imply that the devices or components referred to must have a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating relative importance.

[0168] The above is a further detailed description of the present application in combination with specific preferred embodiments, and cannot be deemed to limit the specific implementation of the present application to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, some simple deductions or substitutions can be made without departing from the concept of the present application, and all of them shall be deemed to fall within the protection scope of the present application.

Claims

1. A power supply device, comprising a contact system (c) of a circuit breaker and a second power supply mechanism (9) matched one-to-one with the contact system (c), wherein the contact system (c) comprises a moving contact mechanism (3) and a static contact (4), the moving contact mechanism (3) comprising a rotatably arranged support (3-0) and a moving contact (3-1) both mounted on the support (3-0), and a contact spring (3-2) respectively matched with the support (3-0) and the moving contact (3-1), wherein the moving contact (3-1) is electrically connected to the contact spring (3-2); Its characteristics are: The second power-taking mechanism (9) comprises a fixedly arranged carrier (9-0) and a power-taking device (9d) mounted on the carrier (9-0); the power-taking device (9d) comprises a second power-taking arm (9-11); and the power-taking device (9d) is also used to be electrically connected to a control circuit board (p) of the circuit breaker; during the closing process of the moving contact mechanism (3) and the static contact (4), the contact spring (3-2) and the second power-taking arm (9-11) are in contact and conductive; when the moving contact mechanism (3) and the static contact (4) are in the disconnected state, the contact spring (3-2) and the second power-taking arm (9-11) are separated and disconnected.

2. The power extraction device according to claim 1, characterized in that: The power taking device (9d) comprises a second power taking member (9-1) and a columnar conductive rod (9-2); the bearing member (9-0) is fixedly arranged and comprises a bearing member mounting groove (9-00); a pair of side walls of the bearing member mounting groove (9-00) are both provided with a bearing member clamping groove (9-01); the second power taking member (9-1) comprises a second power taking arm (9-11) and a second mounting plate (9-12) connected by bending; the conductive rod (9-2) comprises a contact rod (9-20) arranged at one end thereof; and the conductive rod (9- 2) The other end is used to extend toward the location of the control circuit board (p) of the circuit breaker and be electrically connected thereto, the contact rod (9-20) is arranged in the carrier mounting groove (9-00), the second mounting plate (9-12) is inserted into the carrier mounting groove (9-00) along the second direction d2 and a pair of side edges thereof are respectively inserted into the two carrier clamping grooves (9-01), the second mounting plate (9-12) and the bottom wall of the carrier mounting groove (9-00) cooperate to clamp the contact rod (9-20) and are in electrical contact with the contact rod (9-20).

3. The power extraction device according to claim 2, characterized in that: The rotation axis direction of the movable contact mechanism (3) is a first direction d1, the bearing member (9-0) and the movable contact mechanism (3) are arranged side by side along the first direction d1, and the first direction d1 and the second direction d2 are perpendicular to each other.

4. The power extraction device according to claim 3, characterized in that: The plane where the second mounting plate (9-12) is located is perpendicular to the first direction d1, the second mounting plate (9-12) extends along the second direction d2, and the second power taking arm (9-11) extends along the first direction d1.

5. The power extraction device according to claim 4, characterized in that: The conductive rod (9-2) is also respectively limitedly matched with the bearing member (9-0) and the second power extraction member (9-1) to prevent the conductive rod (9-2) from moving relative to the bearing member (9-0) and the second power extraction member (9-1).

6. The power extraction device according to claim 5, characterized in that: The carrier (9-0) further includes a carrier positioning groove (9-09) provided on the bottom wall of the carrier mounting groove (9-00), the contact rod (9-20) is arranged in the carrier positioning groove (9-09), the cross-sectional shape of the contact rod (9-20) is adapted to that of the carrier positioning groove (9-09), and the second mounting plate (9-12) is limitedly engaged with the contact rod (9-20) to keep the contact rod (9-20) in the carrier positioning groove (9-09).

7. The power extraction device according to claim 6, characterized in that: The second mounting plate (9-12) includes a second mounting plate opening (9-120) arranged in the middle thereof and a second contact finger (9-121) arranged in the second mounting plate opening (9-120). The second contact finger (9-121) extends along the axial direction of the contact rod (9-20) and one end is connected to the side of the second mounting plate opening (9-120), and the other end is inclined toward the contact rod (9-20) to press the contact rod (9-20).

8. The power extraction device according to claim 6, characterized in that: The second power-taking component (9-1) further comprises a power-taking component limiting plate (9-134), one end of which is bent and connected to the second mounting plate (9-12), and the bearing member (9-0) is used to cooperate with the housing (1) of the circuit breaker to limit the other end of the power-taking component limiting plate (9-134) between the bearing member (9-0) and the housing (1); the conductive rod (9-2) further comprises an upper connecting rod (9-21) and an upper extension rod (9-22), one end of the upper connecting rod (9-21) is bent and connected to one end of the contact rod (9-20) and the other end is bent and connected to one end of the upper extension rod (9-22), the other end of the upper extension rod (9-22) is used to be electrically connected to the control circuit board (p), the upper connecting rod (9-21) and the contact rod (9-20) are coplanar and the upper extension rod (9-22) is located on one side of the plane; the bearing member (9- 0) also includes a bearing member transverse limiting groove (9-02) and a bearing member vertical limiting groove (9-010), one end of the bearing member transverse limiting groove (9-02) is bent and connected to one end of the bearing member positioning groove (9-09) and the other end is bent and connected to one end of the bearing member vertical limiting groove (9-010); the upper connecting rod (9-21) is arranged in the bearing member transverse limiting groove (9-02), and the upper extension rod (9-22) is arranged in the bearing member vertical limiting groove In the limiting groove (9-010), the power supply component limiting plate (9-134) is at least opposite to at least one section of the vertical limiting groove (9-010) of the bearing component, thereby limiting the upper extension rod (9-22) in the vertical limiting groove (9-010) of the bearing component; the bearing component (9-0) is also used to cooperate with the housing (1) of the circuit breaker to limit the power supply component limiting plate (9-134) between the bearing component (9-0) and the housing (1).

9. The power extraction device according to claim 8, characterized in that: The upper connecting rod (9-21) extends along a first direction d1, and the upper extension rod (9-22) extends along a third direction d3. The first direction d1, the second direction d2 and the third direction d3 are perpendicular to each other.

10. The power extraction device according to claim 8, characterized in that: The power extraction component limiting plate (9-134) comprises a second connecting plate (9-13) and a second limiting plate (9-14); one end of the second connecting plate (9-13) is bent and connected to the second mounting plate (9-12), and the other end is connected to one end of the second limiting plate (9-14); the second connecting plate (9-13) extends along a first direction d1, and the second limiting plate (9-14) extends along a third direction d3; the second connecting plate (9-13) and the second limiting plate (9-14) are coplanar and both are perpendicular to the second direction d2; the bearing member (9-0) is used to cooperate with the housing (1) of the circuit breaker to limit at least a portion of the second limiting plate (9-14) between the bearing member (9-0) and the housing (1), thereby preventing the second power extraction component (9-1) from moving along the second direction d2.

11. The power extraction device according to claim 1, characterized in that: The contact spring (3-2) is a V-shaped structure and includes a spring contact arm (3-20) and a spring matching arm (3-21) that are bent and connected to each other; the support (3-0) includes a support installation cavity (3-00) arranged therein, and a support through hole (3-01) for the moving contact (3-1) to pass through is provided on the bottom wall of the support installation cavity (3-00), and a support platform (3-02) is provided on one side of the support through hole (3-01); the moving contact (3-1) includes a moving contact plate (3-1m), one end of the moving contact plate (3-1m) is a moving contact matching end and the other end is provided with a moving contact point; the contact spring (3-2) is arranged in the support installation cavity (3-00), and the moving contact (3-1m) is provided with a moving contact matching end. The contact mating end passes through the support through hole (3-01) and extends into the support installation cavity (3-00); the spring mating arm (3-21) is pressed and fitted with the moving contact mating end; the spring contact arm (3-20) is pressed and fitted with the side wall of the support installation cavity (3-00) and the free end protrudes outside the support installation cavity (3-00); the bent connection between the spring contact arm (3-20) and the spring mating arm (3-21) is pressed against the support platform (3-02); the second power-taking arm (9-11) is located between the spring contact arm (3-20) and the spring mating arm (3-21) and is mated with the spring contact arm (3-20) of the contact spring (3-2) of the second contact system.

12. The power extraction device according to claim 11, characterized in that: The movable contact (3-1) further comprises a movable contact limiting platform (3-10) arranged on the movable contact mating end and protruding toward the side where the contact spring (3-2) is located; a limiting step (3-11) is formed at the connection between the movable contact limiting platform (3-10) and the movable contact plate (3-1m); the limiting step (3-11) faces the bottom wall of the supporting installation cavity (3-00); the spring mating arm (3-21) is a plate-shaped structure and comprises a mating arm contact finger (3-210) and a mating arm limiting finger (3-211) arranged on its free end and arranged side by side; the free end of the mating arm limiting finger (3-211) abuts against the limiting step (3-11), and the mating arm contact finger (3-210) abuts against the movable contact limiting platform (3-10).

13. The power extraction device according to claim 11, characterized in that: The spring matching arm (3-21) and the second power taking arm (9-11) are both plate-shaped structures. The spring matching arm (3-21) and the second power taking arm (9-11) are arranged relative to each other on the same plane. The second power taking member (9-1) also includes a second power taking contact (9-10) arranged on the second power taking arm (9-11) and used for contacting and conducting with the spring matching arm (3-21).

14. A circuit breaker, characterized in that: The circuit breaker includes at least one group of power-taking devices according to any one of claims 1 to 13; the circuit breaker also includes a contact system (34), the contact system (34) includes two or more groups of contact systems (c) arranged side by side in sequence along a first direction d1, the moving contact mechanisms (3) of each contact system (c) are arranged to rotate synchronously, and the rotation axis direction of each moving contact mechanism (3) is the first direction d1; the contact system (c) cooperating with the second power-taking mechanism (9) is a phase pole contact system and is called a second contact system; the supporting parts (9-0) of each power-taking device are arranged between adjacent moving contact mechanisms (3).

15. The circuit breaker according to claim 14, wherein: The circuit breaker further comprises a housing (1), the housing (1) comprising an upper cover (1-0) and a base (1-1) relatively assembled together along a third direction d3; Adjacent supports (3-0) are connected in transmission via a support connecting shaft (3c); The carrier (9-0) further comprises a carrier bayonet (9-07) arranged at one end thereof, and a first carrier leg (9-034) and a second carrier leg (9-056) respectively located on both sides of the carrier bayonet (9-07); the carrier (9-0) is straddled on the corresponding supporting connecting shaft (3c) through the carrier bayonet (9-07); the first carrier leg (9-034) and the second carrier leg (9-056) are respectively located on both radial sides of the supporting connecting shaft (3c) and respectively abut against the base (1-1) along the third direction d3; the upper cover (1-0) and the base (1-1) respectively cooperate with the carrier (9-0) to limit the carrier (9-0) and fix the carrier (9-0) in the working position.

16. The circuit breaker according to claim 15, wherein: The support (3-0) and the support connecting shaft (3c) are an integrated structure.

17. The circuit breaker according to claim 15, wherein: The base (1-1) includes a partition wall (1-1s) arranged therein, and a support shaft groove (1-15) corresponding to the support connection shaft (3c) is provided on the partition wall (1-1s). Partition walls (1-1s) are provided between adjacent contact systems (c). The first leg (9-034) and the second leg (9-056) of the carrier (9-0) respectively abut against the corresponding partition wall (1-1s) along the third direction d3. The partition wall (1-1s) that cooperates with the carrier (9-0) is a supporting partition wall.

18. The circuit breaker according to claim 17, wherein: The supporting partition wall comprises a front supporting portion (1-10) respectively matched with the first leg (9-034) of the bearing member and a rear supporting portion (1-13) matched with the second leg (9-056) of the bearing member; The front support portion (1-10) comprises a first sub-portion (1-100) and a second sub-portion (1-101) which are relatively spaced apart along a first direction d1, a base card slot (1-102) is formed between the first sub-portion (1-100) and the second sub-portion (1-101), and the second sub-portion (1-101) is provided with a right-angle groove (1-1010) extending along a third direction d3; the first leg (9-034) of the bearing member comprises a first sub-side wall (9-03) and a second sub-side wall (9-04) which are relatively spaced apart along the first direction d1, a bearing member vertical limiting groove (9-010) for accommodating an upper extension rod (9-22) of the conductive rod (9-2) is formed between the first sub-side wall (9-03) and the second sub-side wall (9-04), and the second sub-side wall (9-03) is provided with a right-angle groove (1-1010) extending along a third direction d3. The side wall (9-04) includes an axial limiting platform (9-040) and a radial limiting platform (9-041) arranged at its free end. The axial limiting platform (9-040) is placed in the base card slot (1-102) and is respectively limited and matched with the first sub-part (1-100) and the second sub-part (1-101). The radial limiting platform (9-041) abuts against the end of the first sub-part (1-100) along the third direction d3. The first sub-side wall (9-03) is inserted into the right-angle groove (1-1010). The second limiting plate (9-14) of the second power-taking component (9-1) is aligned with a side surface of the right-angle groove (1-1010) along the second direction d2 and is limited between the side surface of the right-angle groove (1-1010) and the second sub-part (1-101). The rear support portion (1-13) includes a base limiting wall (1-130), a base retaining wall (1-131) and a base positioning groove (1-132), the two base limiting walls (1-130) are arranged relatively spaced apart along the rotation axis of the moving contact mechanism (3), the base retaining wall (1-131) and the base positioning groove (1-132) are arranged side by side along the second direction d2, and the base positioning groove (1-132) is arranged away from the front support portion (1-10) along the second direction d2 relative to the base retaining wall (1-131); the second leg (9-056) of the carrier includes a leg trunk (9-05) and a limiting wall (1-130). The foot (9-06), the leg (9-05) and the first leg (9-034) of the bearing member are arranged relative to each other, and one end of the limiting foot (9-06) is bent and connected to one end of the leg (9-05); the leg (9-05) is placed between two base limiting walls (1-130) along the rotation axis of the moving contact mechanism (3); the leg (9-05) is aligned with the base retaining wall (1-131) in a limited manner along the second direction d2 and is respectively located on both sides of the base retaining wall (1-131) with the front support portion (1-10); the limiting foot (9-06) is inserted into the base positioning groove (1-132) along the third direction d3; The upper cover (1-0) includes an upper cover pressure rib (1-00) and an upper cover positioning rib (1-01); the upper cover pressure rib (1-00) abuts against one end of the bearing member (9-0) away from the base (1-1); the upper cover positioning rib (1-01) cooperates with the base retaining wall (1-131) along the second direction d2 to limit the leg (9-05) between the upper cover positioning rib (1-01) and the base retaining wall (1-131); and the upper cover positioning rib (1-01) abuts against the limiting foot (9-06) along the third direction d3.

19. The circuit breaker according to claim 14, wherein: The circuit breaker further comprises a test button (6) and a first power-taking mechanism (7) that cooperates one-to-one with the contact system (c), the contact system (c) that cooperates with the first power-taking mechanism (7) is a phase-pole contact system and is referred to as the first contact system; the first power-taking mechanism (7) comprises a test arm (7-2) and a power-taking arm (7-3); the test button (6) and the test arm (7-2) are driven and cooperated to test the leakage protection function of the circuit breaker; during the closing process of the movable contact mechanism (3) and the static contact (4) of the first contact system, the contact spring (3-2) and the power-taking arm (7-3) are in contact and conductive; when the movable contact mechanism (3) and the static contact (4) of the first contact system are in the disconnected state, the power-taking arm (7-3) and the contact spring (3-2) are separated and disconnected; the first power-taking mechanism (7) is also used to be electrically connected to the control circuit board (p) to provide it with working power.

20. The circuit breaker according to claim 19, wherein: The circuit breaker further comprises an operating mechanism (2), the operating mechanism (2) being transmission-connected to each movable contact mechanism (3) to drive each movable contact mechanism (3) to rotate; the first power taking mechanism (7) is fixedly arranged on a bracket (2-0) of the operating mechanism (2); and the first contact system and the second contact system are both arranged side by side with the bracket (2-0) along a first direction d1.

21. The circuit breaker according to claim 20, wherein: The first contact system and the second contact system are both located on the same side of the bracket (2-0) in the first direction d1, and the first contact system is arranged closer to the bracket (2-0) relative to the second contact system.

22. The circuit breaker according to claim 21, wherein: The circuit breaker comprises four groups of contact systems (c), two groups of second power taking mechanisms (9) and one group of first power taking mechanisms (7). The four groups of contact systems (c) are respectively an A-phase contact system, a B-phase contact system, a C-phase contact system and an N-phase contact system arranged in sequence along a first direction d1. The operating mechanism (2) is arranged across the N-phase contact system. The A-phase contact system, the B-phase contact system and the C-phase contact system are all phase pole contact systems. One group of second power taking mechanisms (9) is arranged between the moving contact mechanisms (3) of the A-phase contact system and the B-phase contact system and the second power taking mechanism (9) cooperates with the moving contact mechanism (3) of the A-phase contact system. Another group of second power taking mechanisms (9) is arranged between the moving contact mechanisms (3) of the B-phase contact system and the C-phase contact system and cooperates with the moving contact mechanism (3) of the B-phase contact system. The first power taking mechanism (7) cooperates with the moving contact mechanism (3) of the C-phase contact system.

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